Android was founded in 2003 as a mobile operating system developed by Android Inc, which was later acquired by Google in 2005. In 2007, Google formed the Open Handset Alliance to further develop Android as an open-source platform used across various smartphones and tablets. The Android software stack includes an operating system, middleware, and key applications. It uses a multi-process architecture that allows each app to run separately for improved stability. Major versions of Android have been named after desserts in alphabetical order.

2. What is Android?
 Android Inc. was founded in Palo Alto, California.-
Oct, 2003
 Google acquired Android Inc.- Aug, 2005
 The Open Handset Alliance was formed.-5th Nov,
2007
 Google’s ‘Android’ is an open-source platform that’s
currently available on a wide variety of Smartphones
and tablets.
 Android is a software stack for mobile devices that
includes an Operating System, Middleware and Key
Applications.

3. Open Handset Alliance
 Established 5th Nov 2007, led by Google, open source.
 Main Product Android Platform
 Enthusiastic Support from Industry
- Equipment makers
- Network Operators
HTC was First to deliver Android.

4. OPEN HANDSET ALLIANCE
 Consortium of many companies who are allowed to use
source code of Android and develop applications.

5. ANDROID ARCHITECTURE
The Software stack is split into Four Layers:
 The Application Layer
 The Application Framework
 The Libraries and Runtime
 The Kernel

7. FEATURES OF ANDROID
 Android is not a single piece of Hardware.
 Android is a multi-process system, in which each
application (and parts of the system) runs in its own
processes.
 Android supports wireless communication using:
 3G Networks
 4G Networks
 802.11 Wi-Fi Networks
 Bluetooth Connectivity.

8. Version Code name Release date
1.5 Cupcake April 30, 2009
1.6 Donut September 15,2009
2.0-2.1 Éclair October 26, 2009
2.2 Froyo May 20, 2010
2.3-2.3.2 Gingerbread December 6, 2010
2.3.3-2.3.7 Gingerbread February 9, 2011
3.1 Honeycomb May 10, 2011
3.2 Honeycomb July 15, 2011
4.0.3-4.0.4 Ice Cream
Sandwich
December 16, 2011
4.1.x Jelly Bean July 9, 2012
4.2.x Jelly Bean November 13, 2012

9. ANDROID VERSION DISTRIBUTION
4.2.x
4.1.x
4.0.3–4.0.4
3.2
3.1
2.3.3–2.3.7
2.3–2.3.2
2.2
2.0–2.1

10. ADVANTAGES
Multitasking
Ease of Notification
Easy access to
thousands of
applications
Diverse Phone options
Can install a modified
ROM
Widgets etc.
LIMITATIONS
Continuous
Internet connection
Advertising
Android OS uses
more amount of
battery as compared
to normal mobile
phones.

11. CONCLUSION & FUTURE SCOPE
 Android is now stepping up in next level of mobile
internet.
 Google may launch another version of Android that
starts with the letter ‘K’ because Google is launching
all the Android versions in alphabetical order.
 With a growing user base and more applications
available in Google Play, Google has the platform set
for a great future.
 However, growing crisis in privacy and security would
prove a turn off for users to adopt the phone
immediately and may even force them to move out.